Device for administering drenches to livestock



p 9, 1952 A. F. MITCHELL 2,609,819

DEVICE FOR ADMINISTERING DRENCHES TO LIVESTOCK Filed May 18, 1949 Ila-.1. 8

1111111111112 1 11 1 11 M I: |I

1A V ,/l

I I iii 1123061272202 Ema/vib Z0 Patented Sept. 9, 1952 e Ffu-l-j...

Allan Freeman Mitchell, Wanganui, Wellington, New Zealand, assignor to Drcnching Equip: ment Company Limited, Wanganui, Wellington, New ZealamLa company of New Zealand navrcnron f Application May 18, 1949, Serial No. 93,866 I. In New zealand June 21, 1348 The invention relates to devices for administering drenches to livestock, and has for its'object, the provision tor the aforesaid purpose, of an improved form of device designed to enable to be administered to livestock, drenches in a form capable of being dealt with by means of a receptaclewhich can be contracted or distorted to discharge its contents and be permitted to return to a normal condition, to become charged with a drenching medium.

The device provided by the invention, and to be herein described, comprises a body containing a rubber bag which normally retains an open state therein, and iscapable of being compressed to eject its contents through a nozzle, by a pressure bar operable through said body, said bag returning to its open state upon being relieved of pressure. l, i

In order that the invention may, be clearly understood, it will'be more particularly described with the aid of the accompanying drawing, wherein Figure 1 illustrates a longitudinal view of the improved device partly in section and partly in elevation, and Figure 2 is a cross sectional view of the device shownin Figure 1;

In one suitable form, the improved device can.

comprise a cylindrical body [enclosing a bag 2 of rubber of such a nature that it normally retains an open state against the inner surface of the body I. l e

The bag 2 is fitted at its mouth over and to a plug 3 and is retained thereon by being expanded over a circular ridge 4 and engaging in a recess 4, said plug 3 with thebag. 2 attached thereto,

being inserted and received in the body t, so.

that the plug 3 closes an end'of the latter.

The plug 3 has an inclined or sloped inner end 3 inserted in the bag 2, and through which opens the bore of, or a passage 5 in communication with, a nozzle 6 fitted to, and made to incline from the plug 3, and formed with a bent or curved outer end.

A pressure bar I accommodated between the bag 2 and the body I, has a grip 8 protruding through a slot l in the body, in line with the nozzle 6, the grip 8 having an opening 9 therein through which is accessible a screw l0, secured between the top wall ofthe grip and the pressure bar. The screw has operable thereon a nut I I provided with a flange or head I l located between the pressure bar I and the body I so as to engage the wall of the latter, and be held against travel, when turned, the screw Ill being capable of adjustment through the nut H by turning the latter to limit outward protrusion of the grip through the slot I.

5 Claims. 3 (Cl. 128--223) In order to charge the bag 2 with liquid the body of the device is gripped by a hand of the operator and the bag 2 compressed by a'squeezing action applied to the grip B of the pressure bar 1, following which the nozzle 6 is inserted l in the liquid with which the bag 2 is to be charged,

and the pressure removed from the grip 8, which allows the bag 2 to return to its normal state or condition and in doing so to draw liquid through the nozzle 6 into its interior.

Upon again applying pressure to the bag 2 per medium of the grip 8 and pressure bar 1, the

contents of the bag 2 can be forced out of or discharged from the bag 2 through thenozzle 6 and'directed by the latter where required.

A spring IBis provided between the outer end of the nut H and the inner surface of the top or" .the grip 8 to retain the nut H in any ad-' justed position along the screw I0.

' By turning the nut ll relative to' the screw' In to move the screw into or out of the body, the degree of inward and outward movements of the grip 8 and the pressure bar I can beregulated or governed within the limits determined by the permissable adjustment of the screw ID in the nut H, to control the amount of liquid to be drawn into and to be ejected from the bag 2. Markings [2 provided on the grip 8 enable the pressure bar I to beset as required, to deal with or handle a predetermined dose, by adjusting the screw ID to bring a requisite marking 12 in line with the side of the body I.

The plug 3 can be secured in the body I by means of a circular spring clip I3 accommodated in a circular recess or groove in the exterior of thebody I and 'having an inturned end 14 entered in registering holes in said body l and plug 3.

A device of the kind described is of comparatively simple construction, has no springs or like parts liable to easily get out of order, and the bag if and when it becomes worn or loses its resiliency is readily replaced, in addition to which said device is positive in action, not apt to leak and is simple to operate.

What I do claim and desire to obtain by Letters Patent of the United States of America is:

1. A device for administering drenches to livestock comprising an open ended body having a longitudinally extending slot therein, a rubber bag normally retaining an open shape within the body, a plug having a. bore extending therethrough disposed within one end of the body, means securing the bag to the plug, with the bore and the plug communicating with the interior of the ba means securing the plug to the body, a nozzle carried by the plug projecting outwardly therefrom and communicating with the bore, a pressure bar disposed within the body extending longitudinally of the slot therein and interposed between the body and the'bag, a hand grip carried by the pressure bar projecting through the slot in the body and reciprocable through said slot whereby when the body is grasped in the hand and the cular spring clip disposed in said groove and terminating in an inturned end passing through the hand grip is squeezed the pressure bar collapses the bag to eject the contents thereof through the nozzle, upon relaxation of squeezingpressure the bag returning to an open state, and when the nozzle with the bag squeezed is inserted asupply of fluid the relaxation of the squeezing pressure and'returning of the bag to its open, state drawing fluid into the bag through the nozzle, said hand grip including spaced walls extending parallel with the longitudinal edges of the Slot,

and having aligned apertures therein, a screw disposedbetween the-walls and connected to said pressure bar, a nut carried by said screw, said nut having a flange on the inner end of a diameter greater than the width of said slot, said flange resting on the pressure bar and fitting beneath the longitudinal side edges of the slot to prevent outward movement of the screw relative to the body, said nut being disposed centrallyof the apertures inthe walls ofthe grip so that when the nut is turned the screw ismoved relative thereto to vary the position of the pressure bar with respect'to the body whereby the degree ofexpansion of the bag is limited to vary the amount of fluid drawn thereinto when'the bag expands.

A device for administering drench'es to livestock comprising .a hollow body h-avinga slot therein, a rubber bag normally retaining an open state within'the body,,said.bag being compressible to eject its contents, a nozzle through which discharge is effected, means securingthe bag to the nozzle, a pressure bar between the ..body and the bag for compressing the bag, a gripior said bar having openings therein and projecting through the slot in the.body,,.a screw on said bar and grip, a nut on said screw anchored relative to outward movement from said body and turnable for adjusting the position of thenut on the screw and thereby the pos'itionof thep-ressure bar relativeto the body, the openings in the grip providing access for grippingand turning the nut.

3. A device as defined in and by claim} and resilient means between the nutanjd the gripi'to maintain the nut'in any adjusted position along thescrew.

d". A device as defined in and by claim 2 and onend of said bodybeing open, a plug inserted in said open end; said "rubber bag being attached to said plug, said plughaving a passage open'to apertu-re in thegroove and extending into the herein the plug to secure the plug to the body.

5. 'A-device for administering drenches to livestock comprising a hollow body having a slot extending longitudinally thereof, a rubber bag normal-ly retaining an open shape within the body,

, said bag being. compressible to eject its contents,

nozzle supporting means secured respectively to the bag and to the body, a nozzle carried by said means in communication with the bag and through which discharge is effected, bag compressing means including a pressure bar disposed within the body between the same and the bag;

hand grip means connected to'said pressure bar and extending therefrom and protruding through.

saidslot, adjustingmeans for'l-imiting the amount of compression. of the bag for filling andemptying the same including means disposed within the body between the pressure 'bar andlthe body.

and having a portion'ofgreater width than the width of the slot soas to prevent the same from becoming disassociated from the body and being engageable with the body adj-acent'th'e slottolimit its outwardmovement relative 't'o'th'e body, said means being movable with the pressure bar and including means providing for relative inward displacement of the pressure bar withrela'tion to thebody' so that upon effecting sa'idflrelat'ive inward d'isplacementof the pressurebar relative to the body the contents of the bag are limited in accordance with'th'e amount of inward movement ofthepressureba'r. ALLAN FREEMAN MITCHELL. 1

, REFERENCES CITED The following references are of record in the file of this patent: r

"UNITED STATES PATENTS Number Nani-e Date 462,056 'Mantey Oct. 2 7', 1891, 685,258 Conklln Oct.-,2 9 19 01 907,256 Livingston Dec. 2,2, 1 908" "FOREIGN PATENTS; J

Australia Jan.l12, 1929 

